Incheon National University announced that a research team led by Professor Cho Young-wook has developed a high-performance, flexible, all-organic microfiber electrode that overcomes the limitations of conventional metal electrodes while offering softness similar to brain tissue and excellent electrical performance.

The research introduced an innovative method that uses ascorbic acid during the wet-spinning process to control structural defects in the fibers, enabling the stable fabrication of high-quality PEDOT:PSS fibers with aligned nanostructures.

Based on its excellent electrochemical properties, the newly developed electrode can precisely and stably detect subtle neural signals from individual neurons in the hippocampal region of a mouse brain. By using highly biocompatible polymer materials, the electrode also minimizes inflammatory responses in brain tissue during implantation and demonstrates strong operational stability under long-term use.

The technology is expected to serve as a core platform for next-generation brain-computer interfaces (BCI) and for the precise diagnosis and treatment of chronic brain disorders. The research findings were published in *Science Advances*, a leading international multidisciplinary journal.

The study was conducted as collaborative research with Professor Tae-yoon Lee and Professor Ki-joon Yu of the Department of Electrical and Electronic Engineering at Yonsei University and Professor Il-joo Cho’s research team at Korea University College of Medicine.